1.

If $$\frac{{x - {a^2}}}{{b + c}}$$+ $$\frac{{x - {b^2}}}{{c + a}}$$+ $$\frac{{x - {c^2}}}{{a + b}}$$= 4(a + b + c), then x = ?

A. a + b + c)2
B. 2 + b2 + c2
C. b + bc + ca
D. 2 + b2 + c2 - ab - bc - ca
Answer» B. 2 + b2 + c2


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